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Isolating medal objects

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    Drew Dudley

    Hello Landfar,

    Thank you for posting your question. I do not have any experience using the sensor that you purchased. However, if you know what the target values are for the type of metal you are looking for, you can isolate those values or ranges of values using the available graphics display modules like the Isosurface or FaceRender. I would recommend contacting the sensor manufacturer requesting a sample dataset that contains the type of metal you are looking for so you can be sure of the value range you are looking for, Once you know that, you should be able to isolate the metal.

    I hope this helps!

    Drew

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    Drew Dudley

    Hi landfar,

    Thanks for your response. You are asking some really good questions here, that I don't have enough experience to answer with any expertise. My assumption was that the metal would have a signature range of readings; when an Isosurface is assigned that value, the Isosurface with display at those values. The readings for these the specific types of metal may change depending on the soil type, this is something that I do not know. I definitely recommend contacting someone that has some experience using that specific sensor to see if they can shed some light on what values you should be targeting in Voxler. I would be willing to take a look at some of your data. Perhaps adjusting the gridding parameters will give a better rendering of the data. My email is drew@goldensoftware.com.

    Thanks!

    Drew

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    Landfar
    Thanks Drew So If I understand you correctly the Isovalues of differnt materials will remain constant ... Meaning copper will always be in a certain range and gold will have its range also . we were under the assumtion the Isovalues change based on what the types of soil the medal was surrounded by. This makes it much simpler, if the values are constant. So we just have to record the values as we find objects and in the furture that will indicate simalar material type when we see that Isovalue. please let me Know if I have this correct. Thanks
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    MERDJANI

     

    Hi. I am a new in company that have bought a Ground Penetrating Radar system and Voxler 4 like software, to study and analyze the soils. I can do the render of the analysis in 3D (gridding, isovalue, volrender..). But I still couldn't understand how to identifying different soil components and objects from the colors on the image. How to know for example this color refers to the sand, this one to the rock, the water ... etc. The same thing for metals; how can I know it's gold or copper ... 

    Thanks

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    Leslie McWhirter

    Hi Merdjani,

    For Isosurfaces, you set the specific value that is displaying, so you know it as you set it. For VolRenders, you can display a legend to tell you what colors correspond to what values. As for what value corresponds to what object type (sand, rock, water, etc.), that's up to you to know. Voxler displays your data, it does not interpret it for you. If you don't understand what the value means (i.e. what is being measured), I suggest contacting the manufacturer of your GPR equipment. If you know what is being measured but not what values refer to what materials, perhaps an internet search would help.

    Thanks,

    Leslie

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